1999•Applied Physics LettersRequires access

Electron emission from films of carbon nanotubes and ta-C coated nanotubes

Stevan Dimitrijević, James C. Withers, Victor P. Mammana, O.R. Monteiro, Joel W. Ager, I.G. Brown

Abstract

The field emission properties of multiwall carbon nanotube films with and without a coating of tetrahedrally bonded amorphous carbon (ta-C) were investigated. Voltage thresholds of 2.4 V/μm for uncoated films and 1.5 V/μm for ta-C coated films were found. The results for the uncoated films are in good agreement with previous measurements of field emission from carbon nanotubes. The effect of the ta-C coating on the emission properties is discussed in light of current field emission models.

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Key concepts: Carbon nanotube, Field electron emission, Materials science, Optical properties of carbon nanotubes, Coating, Amorphous carbon, Potential applications of carbon nanotubes, Nanotube